Based after season 3 and 4. Allison never died and Aiden never died. Ethan never left and neither did Derek. Peter became good and Cora never left. Derek will become a True Alpha and maybe find his mate on his way of becoming a good Alpha. Scott is a true alpha and Liam is his beta. Jackson never left for London and Lydia is a banshee. Stiles may or may not stay human and Malia never dated Stiles. Kira is a kitsune and Erica and Boyd never died. Isaac never left either. The pack is bigger and stronger than they ever will be in their lives. They protect each other no matter what. Mason and Corey are in here too with Hayden. Theo died and the dread doctors got killed.